I'm looking forward to getting my T4's! However I will need access to the 10 extra GPIO pins on the bottom before I can do any serious work with it. Has anybody designed a breakout board at this point?

TallDog at Tindie says he is planning one, but he said he would have to get hold of a T4 to design one, so it could be some time...

I'm thinking of designing a simple breakout, using a 5x2 right-angle SMD male header (as TallDog does for the T3.x) to get at the pins, but if there is already a design available it would be great to have access to it